Comparison

BLEASS Spectral Resonator vs Marco Synth

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

BLEASS Spectral Resonator

Transform audio by manipulating its frequency content to create unique spectral textures and resonances. Generate complex harmonic sounds from internal tone generators or MIDI input, with deep control over pitch, timbre, and spectral filtering.

Highlights
  • Spectral domain audio conversion
  • Frequency shifting, blurring, and filtering
  • Internal tone generator and MIDI input
  • Up to eight voices of polyphony
  • Detailed control over resonance parameters
  • Interactive 3D spectrogram visualization
  • Freeze and Kill controls
Read full description

By converting audio into the spectral domain, BLEASS Spectral Resonator can shift, blur, filter, and restructure the frequency content of any sound before generating resonances. When blended with the source signal, this adds a controllable layer of pitch and timbre. Used fully wet, it produces rich and complex spectral textures. Resonances can be generated from an internal four-voice tone generator or directly from incoming MIDI notes. With up to eight voices of polyphony, glide, pitch bend, and up to 256 harmonics per voice, BLEASS Spectral Resonator can be played from MIDI to create tuned harmonic resonances and evolving spectral textures. Intuitive controls provide detailed manipulation of the resonator behaviour, including unison, detuning, harmonic stretching, density, damping, decay, and harmonic filtering. Harmonics can be restricted to even or odd series, while spectral shifting and blurring further reshape the resulting resonances. A spectral-domain filter lets you select the frequency range used to excite the resonators. The interactive 3D spectrogram visualises resonator activity over time while also providing direct control over the spectral filter. BLEASS Spectral Resonator also includes Freeze and Kill controls for holding or clearing active resonances. Designed to combine deep spectral processing with an accessible interface, it opens new possibilities for harmonic, rhythmic, and dynamic sound design, including inharmonic or atonal material such as drums. BLEASS Spectral Resonator is also available for Desktop. Find more information here: http://www.bleass.com/spectral-resonator

About

Marco Synth

This powerful synthesizer app offers a unique dual hard sync engine with four independent oscillators. Explore a vast sonic palette with intelligent randomization and a tactile workflow designed for sound discovery. It's suitable for both beginners and experienced musicians.

Highlights
  • Dual hard sync engine
  • Four independent oscillators
  • Intelligent randomization
  • Extensive waveform and filter options
  • Master FX bus
  • AUv3 plugin support
  • Built-in keyboard
Features
Read full description

Marco is a powerful 4-oscillator synth built around dual hard sync, with independent shaping on every oscillator. Randomize to spark fresh ideas, then tweak to shape them - a fast, tactile workflow made for finding your own sounds, not just recalling presets. Marco is a new kind of synthesizer built around three breakthrough ideas: • Dual Hard Sync - two parallel hard-sync chains running side by side • Four oscillators, each with its own signal shaping path • Intelligent randomization and tweak system The result is shimmering harmonics, screaming overtones, and evolving timbres no other iOS synth can give you. Whether it's your first synth or your fortieth, Marco meets you where you are. Hit the dice for an instant new sound. Cycle through every valid Dual Hard Sync combination with one tap. Or dive deep into per-oscillator sound design when you're ready. DUAL HARD SYNC • Two parallel hard-sync chains - A, B, or free per oscillator • One-tap cycling through every valid Dual Hard Sync combination • 10 Signature presets built around Dual Hard Sync FOUR INDEPENDENT OSCILLATORS • Waveforms: sine, triangle, saw, ramp, pulse, noise • Filters: LP 6/12/18/24, BP, HP, Notch, Formant • Envelopes: VCA + Filter, linear or exponential, drone mode • LFOs: filter, volume, wavefold, pitch - with phase, reset, fade and clock sync • Glide: exponential, linear, log, S-curve, legato • Master FX bus with drive, compressor, delay, reverb, stereo width and limiter • Hard sync and wavefolding • Link envelopes, filters, LFOs, glide or effects across oscillators when wanting traditional shaping • Monophonic sounds usually only possible in large modular setups INTELLIGENT RANDOMISATION • Musical preset generator - usable sounds, not chaos • Generate by style: Mild, Wild and Recipe • Target by category: Bass, Lead, Pad, Keys, FX, Drone • Tweak system for subtle, context-aware variations • One-tap dice button for instant inspiration EFFORTLESS WORKFLOW • Consistent UI across all four oscillators • Per-oscillator scopes with live visual feedback • Live LFO indicators on every modulated parameter • Expressive XY pad • Built-in keyboard on iPad standalone BUILT FOR REAL MUSIC • 100+ presets, including 10 Signature sounds • Preset import / export • Master Preset import / export • Deep MIDI: full Note + CC mapping (CC mapping AUv3 only) • Dedicated MIDI for Random Generate, Tweak, Dual Hard Sync Cycle, Scope, Preset Browser, XY Pad (AUv3 only) • Clock-synced LFOs lock to host tempo • AUv3 plugin - works in AUM, Loopy Pro, Drambo, Logic Pro, GarageBand, Cubasis and more • Built-in song player with public domain tracks (standalone only)

Screenshots

BLEASS Spectral Resonator3 screens
Marco Synth4 screens

Verdict

The call

The clearest difference is price: Marco Synth at $4.99 against BLEASS Spectral Resonator's $19.99. BLEASS Spectral Resonator's advantage is iOS requirement (12.0 vs 17.6). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

BLEASS Spectral Resonator costs $19.99 and Marco Synth $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for BLEASS Spectral Resonator against 5.0 for Marco Synth. Both are backed by a comparable volume of ratings — 4 and 4 respectively.

Scorecard2 real differences · 8 level
BLEASS Spectral Resonator versus Marco Synth: the parameters behind the verdict, then further details
ParameterBLEASS Spectral ResonatorMarco Synth
Price$19.99$4.99 — better
Rating5.0 (4 ratings)5.0 (4 ratings)
Positive reviews—100.0% of reviews
Number of ratings44
Update frequency—Weekly
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.6
Further details — not scored
Size24 MB6 MB
Age rating4+4+
DeveloperBLEASSGlenn Vassallo

Customer experience

BLEASS Spectral Resonator

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Marco Synth

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

BLEASS Spectral Resonator

No in-app purchases

None

Marco Synth

No in-app purchases

Questions

Is BLEASS Spectral Resonator free?
BLEASS Spectral Resonator costs $19.99, with no in-app purchases.
Is Marco Synth free?
Marco Synth costs $4.99, with no in-app purchases.
Which has better reviews, BLEASS Spectral Resonator or Marco Synth?
BLEASS Spectral Resonator and Marco Synth are both rated 5.0 out of 5 on the App Store, from 4 and 4 ratings respectively.
Do BLEASS Spectral Resonator or Marco Synth have ads?
Neither BLEASS Spectral Resonator nor Marco Synth shows ads.

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